YOU SAID:

Hey, quick question actually, what does it mean when it says launch the train

INTO JAPANESE

ねえ、簡単な質問ですが、電車を発車するとはどういう意味ですか

BACK INTO ENGLISH

Hey, a simple question, what does it mean to leave the train?

INTO JAPANESE

ねえ、簡単な質問、電車を出るとはどういう意味ですか？

BACK INTO ENGLISH

Hey, a simple question, what does it mean to leave the train?